import React, { Component } from 'react';
// 引入 ECharts 主模块
import echarts from 'echarts/lib/echarts';


var dataAxis = ['点', '击', '柱', '子', '或', '者', '两', '指', '在', '触', '屏', '上', '滑', '动', '能', '够', '自', '动', '缩', '放'];
var data = [220, 182, 191, 234, 290, 330, 310, 123, 442, 321, 90, 149, 210, 122, 133, 334, 198, 123, 125, 220];
var yMax = 500;
var dataShadow = [];

for (var i = 0; i < data.length; i++) {
    dataShadow.push(yMax);
}

class EchartsTest2 extends Component {
    componentDidMount() {
        // 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main2'));
        // 绘制图表
        myChart.setOption({
            title: {
                text: '特性示例：渐变色 阴影 点击缩放',
                subtext: 'Feature Sample: Gradient Color, Shadow, Click Zoom'
            },
            xAxis: {
                data: dataAxis,
                axisLabel: {
                    inside: true,
                    textStyle: {
                        color: '#fff'
                    }
                },
                axisTick: {
                    show: false
                },
                axisLine: {
                    show: false
                },
                z: 10
            },
            yAxis: {
                axisLine: {
                    show: false
                },
                axisTick: {
                    show: false
                },
                axisLabel: {
                    textStyle: {
                        color: '#999'
                    }
                }
            },
            dataZoom: [
                {
                    type: 'inside'
                }
            ],
            series: [
                { // For shadow
                    type: 'bar',
                    itemStyle: {
                        normal: {color: 'rgba(0,0,0,0.05)'}
                    },
                    barGap:'-100%',
                    barCategoryGap:'40%',
                    data: dataShadow,
                    animation: false
                },
                {
                    type: 'bar',
                    itemStyle: {
                        normal: {
                            color: new echarts.graphic.LinearGradient(
                                0, 0, 0, 1,
                                [
                                    {offset: 0, color: '#83bff6'},
                                    {offset: 0.5, color: '#188df0'},
                                    {offset: 1, color: '#188df0'}
                                ]
                            )
                        },
                        emphasis: {
                            color: new echarts.graphic.LinearGradient(
                                0, 0, 0, 1,
                                [
                                    {offset: 0, color: '#2378f7'},
                                    {offset: 0.7, color: '#2378f7'},
                                    {offset: 1, color: '#83bff6'}
                                ]
                            )
                        }
                    },
                    data: data
                }
            ]
        });
    }
    render() {
        return (
            <div id="main2" style={{ width: 400, height: 400 }}></div>
        );
    }
}

export default EchartsTest2;